Assume that the origin goes through the place marked in the diagram. The three masses are connected by massless, rigid rods of 30 cm length (center-to-center). If the mass of A is 100 g, the mass of B is 150 g and the mass of C is 400 g, what is the x-coordinate (in cm) of the center of mass? What is the y-coordinate (in cm) of the center of mass?
Rigid Body
A rigid body is an object which does not change its shape or undergo any significant deformation due to an external force or movement. Mathematically speaking, the distance between any two points inside the body doesn't change in any situation.
Rigid Body Dynamics
Rigid bodies are defined as inelastic shapes with negligible deformation, giving them an unchanging center of mass. It is also generally assumed that the mass of a rigid body is uniformly distributed. This property of rigid bodies comes in handy when we deal with concepts like momentum, angular momentum, force and torque. The study of these properties – viz., force, torque, momentum, and angular momentum – of a rigid body, is collectively known as rigid body dynamics (RBD).
Assume that the origin goes through the place marked in the diagram. The three masses are connected by massless, rigid rods of 30 cm length (center-to-center). If the mass of A is 100 g, the mass of B is 150 g and the mass of C is 400 g, what is the x-coordinate (in cm) of the center of mass?
What is the y-coordinate (in cm) of the center of mass?
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